Ukrainian Energy Minister Yuri Prodan talks to journalists as he leaves after talks with members of the Russian delegation and European Union Energy Commissioner Guenther Oettinger (not pictured) in Kiev June 16, 2014. REUTERS/Valentyn Ogirenko

Monday, June 16, 2014

Ukrainian Energy Minister Yuri Prodan talks to journalists as he leaves after talks with members of the Russian delegation and European Union Energy Commissioner Guenther Oettinger (not pictured) in Kiev June 16, 2014. REUTERS/Valentyn Ogirenko

Andriy Kobolev, chief executive of Ukrainian state gas company Naftogaz, talks to journalists as he leaves after talks with members of the Russian delegation and European Union Energy Commissioner Guenther Oettinger, in Kiev June 16, 2014. REUTERS/Valentyn Ogirenko

Monday, June 16, 2014

Andriy Kobolev, chief executive of Ukrainian state gas company Naftogaz, talks to journalists as he leaves after talks with members of the Russian delegation and European Union Energy Commissioner Guenther Oettinger, in Kiev June 16, 2014. REUTERS/Valentyn Ogirenko